EP2443105B1 - Novel phenylimidazole derivative as pde10a enzyme inhibitor - Google Patents
Novel phenylimidazole derivative as pde10a enzyme inhibitor Download PDFInfo
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- EP2443105B1 EP2443105B1 EP10725373.4A EP10725373A EP2443105B1 EP 2443105 B1 EP2443105 B1 EP 2443105B1 EP 10725373 A EP10725373 A EP 10725373A EP 2443105 B1 EP2443105 B1 EP 2443105B1
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- NBKCQLCLNHGTJU-UHFFFAOYSA-N Cc1cnc(C)c2nc(CCc3nc(-c4ccccc4)c[n]3C)n[n]12 Chemical compound Cc1cnc(C)c2nc(CCc3nc(-c4ccccc4)c[n]3C)n[n]12 NBKCQLCLNHGTJU-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
- C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
- C07D487/04—Ortho-condensed systems
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/14—Drugs for disorders of the nervous system for treating abnormal movements, e.g. chorea, dyskinesia
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/14—Drugs for disorders of the nervous system for treating abnormal movements, e.g. chorea, dyskinesia
- A61P25/16—Anti-Parkinson drugs
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/18—Antipsychotics, i.e. neuroleptics; Drugs for mania or schizophrenia
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/22—Anxiolytics
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/24—Antidepressants
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/28—Drugs for disorders of the nervous system for treating neurodegenerative disorders of the central nervous system, e.g. nootropic agents, cognition enhancers, drugs for treating Alzheimer's disease or other forms of dementia
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/30—Drugs for disorders of the nervous system for treating abuse or dependence
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/30—Drugs for disorders of the nervous system for treating abuse or dependence
- A61P25/32—Alcohol-abuse
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/30—Drugs for disorders of the nervous system for treating abuse or dependence
- A61P25/36—Opioid-abuse
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
Definitions
- the invention provides a compound that is a PDE10A enzyme inhibitor, and as such is useful to treat neurodegenerative and psychiatric disorders.
- the invention also provides pharmaceutical compositions comprising the compound of the invention and the compound of the invention for use in treating disorders.
- cyclic-adenosine monophosphate cyclic-adenosine monophosphate
- cGMP cyclic-guanosine monophosphate
- Intracellular cAMP and cGMP are generated by adenyl and guanyl cyclases, and are degraded by cyclic nucleotide phosphodiesterases (PDEs).
- Intracellular levels of cAMP and cGMP are controlled by intracellular signaling, and stimulation/repression of adenyl and guanyl cyclases in response to GPCR activation is a well characterized way of controlling cyclic nucleotide concentrations ( Antoni, F.A. Front.
- cAMP and cGMP levels in turn control activity of cAMP- and cGMP-dependent kinases as well as other proteins with cyclic nucleotide response elements, which through subsequent phosphorylation of proteins and other processes regulate key neuronal functions such as synaptic transmission, neuronal differentiation and survival.
- PDEs are a class of intracellular enzymes that regulate levels of cAMP and cGMP via hydrolysis of the cyclic nucleotides into their respective nucleotide monophosphates. Some PDEs degrade cAMP, some cGMP and some both. Most PDEs have a widespread expression and have roles in many tissues, while some are more tissue-specific.
- Phosphodieasterase 10A is a dual-specificity phosphodiesterase that can convert both cAMP to AMP and cGMP to GMP ( Loughney, K. et al. Gene 1999, 234, 109-117 ; Fujishige, K. et al. Eur. J. Biochem. 1999, 266, 1118-1127 and Soderling, S. et al. Proc. Natl. Acad. Sci. 1999, 96, 7071-7076 ). PDE10A is primarily expressed in the neurons in the striatum, n. accumbens and in the olfactory tubercle ( Kotera, J. et al. Biochem. Biophys. Res. Comm. 1999, 261, 551-557 and Seeger, T.F. et al. Brain Research, 2003, 985, 113-126 ).
- Mouse PDE10A is the first identified member of the PDE10 family of phosphodiesterases ( Fujishige, K. et al. J. Biol. Chem. 1999, 274, 18438-18445 and Loughney, K. et al. Gene 1999, 234, 109-117 ) and N-terminal splice variants of both the rat and human genes have been identified ( Kotera, J. et al. Biochem. Biophys. Res. Comm. 1999, 261, 551-557 and Fujishige, K. et al. Eur. J. Biochem. 1999, 266, 1118-1127 ). There is a high degree of homology across species. PDE10A is uniquely localized in mammals relative to other PDE families.
- mRNA for PDE10 is highly expressed in testis and brain ( Fujishige, K. et al. Eur J Biochem. 1999, 266, 1118-1127 ; Soderling, S. et al. Proc. Natl. Acad. Sci. 1999, 96, 7071-7076 and Loughney, K. et al. Gene 1999, 234,109-117 ). These studies indicate that within the brain, PDE10 expression is highest in the striatum (caudate and putamen), n. accumbens and olfactory tubercle. More recently, an analysis has been made of the expression pattern in rodent brain of PDE10A mRNA ( Seeger, T.F. et al. Abst. Soc.
- MSN medium spiny neurons
- the MSN has a key role in the cortical-basal ganglia-thalamocortical loop, integrating convergent cortical/thalamic input, and sending this integrated information back to the cortex.
- MSN express two functional classes of neurons: the D 1 class expressing D 1 dopamine receptors and the D 2 class expressing D 2 dopamine receptors.
- the D 1 class of neurons is part of the 'direct' striatal output pathway, which broadly functions to facilitate behavioral responses.
- the D 2 class of neurons is part of the 'indirect' striatal output pathway, which functions to suppress behavioral responses that compete with those being facilitated by the 'direct' pathway. These competing pathways act like the brake and accelerator in a car.
- the poverty of movement in Parkinson's disease results from over-activity of the 'indirect' pathway, whereas excess movement in disorders such as Huntington's disease represent over-activity of the direct pathway.
- PDE10A regulation of cAMP and/or cGMP signaling in the dendritic compartment of these neurons may be involved in filtering the cortico/thalamic input into the MSN.
- PDE10A may be involved in the regulation of GABA release in the substantia nigra and globus pallidus ( Seeger, T.F. et al. Brain Research, 2003, 985, 113-126 ).
- Dopamine D 2 receptor antagonism is well established in the treatment of schizophrenia. Since the 1950's, dopamine D 2 receptor antagonism has been the mainstay in psychosis treatment and all effective antipsychotic drugs antagonise D 2 receptors. The effects of D 2 are likely to be mediated primarily through neurons in the striatum, n. accumbens and olfactory tubercle, since these areas receive the densest dopaminergic projections and have the strongest expression of D 2 receptors ( Konradi, C. and Heckers, S. Society of Biological Psychiatry, 2001, 50, 729-742 ).
- Dopamine D 2 receptor agonism leads to decrease in cAMP levels in the cells where it is expressed through adenylate cyclase inhibition, and this is a component of D 2 signalling ( Stoof, J. C.; Kebabian J. W. Nature 1981, 294, 366-368 and Neve, K. A. et al. Journal of Receptors and Signal Transduction 2004, 24, 165-205 ). Conversely, D 2 receptor antagonism effectively increases cAMP levels, and this effect could be mimicked by inhibition of cAMP degrading phosphodiesterases.
- PDE10A in this context, has the desired expression profile with high and relatively specific expression in neurons in striatum, n. accumbens and olfactory tubercle, PDE10A inhibition is likely to have effects similar to D 2 receptor antagonism and therefore have antipsychotic effects.
- PDE10A inhibition is expected to mimic D 2 receptor antagonism in part, it might be expected to have a different profile.
- the D 2 receptor has signalling components besides cAMP ( Neve, K. A. et al. Journal of Receptors and Signal Transduction 2004, 24, 165-205 ), for which reason interference with cAMP through PDE10A inhibition may negatively modulate rather than directly antagonise dopamine signaling through D 2 receptors. This may reduce the risk of the extrapyrimidal side effects that are seen with strong D 2 antagonism.
- PDE10A inhibition may have some effects not seen with D 2 receptor antagonism.
- PDE10A is also expressed in D 1 receptors expressing striatal neurons ( Seeger, T. F. et al.
- D 1 receptor agonism leads to stimulation of adenylate cyclase and resulting increase in cAMP levels
- PDE10A inhibition is likely to also have effects that mimic D 1 receptor agonism.
- PDE10A inhibition will not only increase cAMP in cells, but might also be expected to increase cGMP levels, since PDE10A is a dual specificity phosphodiesterase.
- cGMP activates a number of target protein in cells like cAMP and also interacts with the cAMP signalling pathways.
- PDE10A inhibition is likely to mimic D 2 receptor antagonism in part and therefore has antipsychotic effect, but the profile might differ from that observed with classical D 2 receptor antagonists.
- the PDE10A inhibitor papaverine is shown to be active in several antipsychotic models.
- Papaverine potentiated the cataleptic effect of the D 2 receptor antagonist haloperidol in rats, but did not cause catalepsy on its own ( WO 03/093499 ).
- Papaverine reduced hyperactivity in rats induced by PCP, while reduction of amphetamine induced hyperactivity was insignificant ( WO 03/093499 ).
- WO 03/093499 further discloses the use of selective PDE10 inhibitors for the treatment of associated neurologic and psychiatric disorders.
- PDE10A inhibition reverses subchronic PCP-induced deficits in attentional set-shifting in rats ( Rodefer et al. Eur. J. Neurosci. 2005, 4, 1070-1076 ). This model suggests that PDE10A inhibition might alleviate cognitive deficits associated with schizophrenia.
- the tissue distribution of PDE10A indicates that PDE10A inhibitors can be used to raise levels of cAMP and/or cGMP within cells that express the PDE10 enzyme, especially neurons that comprise the basal ganglia, and the PDE10A inhibitors of the invention would therefore be useful in treating a variety of associated neuropsychiatric conditions involving the basal ganglia such as neurological and psychiatric disorders, schizophrenia, bipolar disorder, obsessive compulsive disorder, and the like, and may have the benefit of not possessing unwanted side effects, which are associated with the current therapies on the market.
- EP 1250923 discloses the use of selective PDE10 inhibitors in general, and papaverine in particular, for the treatment of certain neurologic and psychiatric disorders.
- WO 05/113517 discloses benzodiazepine stereospecific compounds as inhibitors of phosphodiesterase, especially types 2 and 4, and the prevention and treatment of pathologies involving a central and/or peripheral disorder.
- WO 02/88096 discloses benzodiazepine derivatives and their uses as inhibitors of phosphodiesterase, especially type 4 in the therapeutic field.
- WO 04/41258 discloses benzodiazepinone derivatives and their uses as inhibitors of phosphodiesterase, especially type 2 in the therapeutic field.
- Pyrrolodihydroisoquinolines and variants thereof are disclosed as inhibitors of PDE10 in WO 05/03129 and WO 05/02579 .
- Piperidinyl-substituted quinazolines and isoquinolines that serve as PDE10 inhibitors are disclosed in WO 05/82883 .
- WO 06/11040 discloses substituted quinazoline and isoquinoline compounds that serve as inhibitors of PDE10.
- US 20050182079 discloses substituted tetrahydroisoquinolinyl derivatives of quinazoline and isoquinoline that serve as effective phosphodiesterase (PDE) inhibitors.
- PDE phosphodiesterase
- US 20060019975 discloses piperidine derivatives of quinazoline and isoquinoline that serve as effective phosphodiesterase (PDE) inhibitors.
- US 20060019975 also relates to compounds that are selective inhibitors of PDE10.
- WO 06/028957 discloses cinnoline derivatives as inhibitors of phosphodiesterase type 10 for the treatment of psychiatric and neurological syndromes.
- these disclosures do not pertain to the compound of the invention, which are structurally unrelated to any of the known PDE10 inhibitors ( Kehler, J. et al. Expert Opin. Ther. Patents 2007, 17, 147-158 ).
- the compound of the invention is for the first time disclosed in WO09/152825 from which application priority is claimed.
- the compound of the invention proves to be an efficient PDE10A enzyme inhibitor and an in vivo active compound that reverses the PCP induced hyperactivity by 99% and may thus offer alternatives to current marketed treatments for neurodegenerative and/or psychiatric disorders, which are not efficacious in all patients. Hence, there remains a need for alternative methods of treatment.
- the objective of the invention is to provide a compound that is a selective PDE10A enzyme inhibitor.
- a further objective of the invention is to provide a compound that has such activity, and has good, preferably improved, solubility, metabolic stability and/or bioavailability compared to prior art compounds.
- Another objective of the invention is to provide an effective treatment, in particular long-term treatment, of a human patient, without causing the side effects typically associated with current therapies for neurological and psychiatric disorders.
- the invention relates to the compound 5,8-Dimethyl-2-[2-(1-methyl-4-phenyl-1 H-imidazol-2-yl)-ethyl]-[1,2,4]triazolo[1,5-a]pyrazine of formula I:
- compound of the invention includes 5,8-Dimethyl-2-[2-(1-methyl-4-phenyl-1H-imidazol-2-yl)-ethyl]-[1,2,4]triazolo[1,5-a]pyrazine of formula I and ph salts thereof.
- the invention further provides the compound of the invention, or a pharmaceutically acceptable acid addition salt thereof, for use as a medicament.
- the invention provides a pharmaceutical composition
- a pharmaceutical composition comprising the compound of the invention and a pharmaceutically acceptable carrier, diluent or excipient.
- the invention further provides the use of the compound of the invention for the preparation of a medicament for the treatment of a neurodegenerative or psychiatric disorder.
- the invention further provides the compound of the invention for use in the treatment of a psychiatric disorder selected from the group consisting of schizophrenia, for example of the paranoid, disorganized, catatonic, undifferentiated, or residual type; schizophreniform disorder; schizoaffective disorder, for example of the delusional type or the depressive type; delusional disorder; bipolar disorder, for example bipolar I disorder, bipolar II disorder, and cyclothymic disorder; substance-induced psychotic disorder, for example psychosis induced by alcohol, amphetamine, cannabis, ***e, hallucinogens, inhalants, opioids, or phencyclidine; personality disorder of the paranoid type; and personality disorder of the schizoid type.
- a psychiatric disorder selected from the group consisting of schizophrenia, for example of the paranoid, disorganized, catatonic, undifferentiated, or residual type; schizophreniform disorder; schizoaffective disorder, for example of the delusional type or the de
- PDE 10, PDE 10A and PDE 10A enzyme are used interchangeably.
- the compound of the invention has, when tested as described in the section PDE10A enzyme inhibition assay, an IC 50 value of about 2.2 nM which makes it a useful compound for inhibition of PDE 10A enzyme activity.
- PCP phencyclidine
- the invention also comprises salts of the compound the invention, typically, pharmaceutically acceptable salts.
- Such salts include pharmaceutically acceptable acid addition salts.
- Acid addition salts include salts of inorganic acids as well as organic acids.
- suitable inorganic acids include hydrochloric, hydrobromic, hydroiodic, phosphoric, sulfuric, sulfamic, nitric acids and the like.
- suitable organic acids include formic, acetic, trichloroacetic, trifluoroacetic, propionic, benzoic, cinnamic, citric, fumaric, glycolic, itaconic, lactic, methanesulfonic, maleic, malic, malonic, mandelic, oxalic, picric, pyruvic, salicylic, succinic, methane sulfonic, ethanesulfonic, tartaric, ascorbic, pamoic, bismethylene salicylic, ethanedisulfonic, gluconic, citraconic, aspartic, stearic, palmitic, EDTA, glycolic, p-aminobenzoic, glutamic, benzenesulfonic, p-tol
- compositions include the pharmaceutically acceptable salts listed in Berge, S.M. et al., J. Pharm. Sci. 1977, 66, 2 , the contents of which are hereby incorporated by reference.
- the compound of this invention may exist in unsolvated as well as in solvated forms with pharmaceutically acceptable solvents such as water, ethanol and the like.
- the solvated forms are considered equivalent to the unsolvated forms for the purposes of this invention.
- the invention further provides a pharmaceutical composition comprising the compound of the invention and a pharmaceutically acceptable carrier or diluent.
- the invention also provides a pharmaceutical composition comprising the compound of the invention and a pharmaceutically acceptable carrier or diluent.
- the compound of the invention may be administered alone or in combination with pharmaceutically acceptable carriers, diluents or excipients, in either single or multiple doses.
- pharmaceutical compositions according to the invention may be formulated with pharmaceutically acceptable carriers or diluents as well as any other known adjuvants and excipients in accordance with conventional techniques such as those disclosed in Remington: The Science and Practice of Pharmacy, 19th Edition, Gennaro, Ed., Mack Publishing Co., Easton, PA, 1995 .
- compositions may be specifically formulated for administration by any suitable route such as oral, rectal, nasal, pulmonary, topical (including buccal and sublingual), transdermal, intracisternal, intraperitoneal, vaginal and parenteral (including subcutaneous, intramuscular, intrathecal, intravenous and intradermal) routes. It will be appreciated that the route will depend on the general condition and age of the patient to be treated, the nature of the condition to be treated and the active ingredient.
- compositions for oral administration include solid dosage forms such as capsules, tablets, dragees, pills, lozenges, powders and granules. Where appropriate, the compositions may be prepared with coatings such as enteric coatings or they may be formulated so as to provide controlled release of the active ingredient such as sustained or prolonged release according to methods well known in the art.
- Liquid dosage forms for oral administration include solutions, emulsions, suspensions, syrups and elixirs.
- compositions for parenteral administration include sterile aqueous and nonaqueous injectable solutions, dispersions, suspensions or emulsions as well as sterile powders to be reconstituted in sterile injectable solutions or dispersions prior to use.
- Other suitable administration forms include, but are not limited to, suppositories, sprays, ointments, creams, gels, inhalants, dermal patches and implants.
- Typical oral dosages of the compound of the invention range from about 0.001 to about 100 mg/kg body weight per day. Typical oral dosages also range from about 0.01 to about 50 mg/kg body weight per day. Typical oral dosages of the compound of the invention further range from about 0.05 to about 10 mg/kg body weight per day. Oral dosages are usually administered in one or more dosages, typically, one to three dosages per day. The exact dosage will depend upon the frequency and mode of administration, the sex, age, weight and general condition of the patient treated, the nature and severity of the condition treated and any concomitant diseases to be treated and other factors evident to those skilled in the art.
- compositions may also be presented in a unit dosage form by methods known to those skilled in the art.
- a typical unit dosage form for oral administration may contain from about 0.01 to about 1000 mg, from about 0.05 to about 500 mg, or from about 0.5 mg to about 200 mg of the compound of the invention.
- parenteral routes such as intravenous, intrathecal, intramuscular and similar administration
- typical doses are in the order of half the dose employed for oral administration.
- the invention also provides a process for making a pharmaceutical composition
- a pharmaceutical composition comprising admixing the compound of the invention and at least one pharmaceutically acceptable carrier or diluent.
- the compound of this invention is generally utilized as the free substance or as a pharmaceutically acceptable salt thereof.
- solutions of the compound of the invention in sterile aqueous solution aqueous propylene glycol, aqueous vitamin E or sesame or peanut oil may be employed.
- aqueous solutions should be suitably buffered if necessary and the liquid diluent first rendered isotonic with sufficient saline or glucose.
- the aqueous solutions are particularly suitable for intravenous, intramuscular, subcutaneous and intraperitoneal administration.
- the compound of the invention may be readily incorporated into known sterile aqueous media using standard techniques known to those skilled in the art.
- Suitable pharmaceutical carriers include inert solid diluents or fillers, sterile aqueous solutions and various organic solvents.
- solid carriers include lactose, terra alba, sucrose, cyclodextrin, talc, gelatin, agar, pectin, acacia, magnesium stearate, stearic acid and lower alkyl ethers of cellulose.
- liquid carriers include, but are not limited to, syrup, peanut oil, olive oil, phospholipids, fatty acids, fatty acid amines, polyoxyethylene and water.
- the carrier or diluent may include any sustained release material known in the art, such as glyceryl monostearate or glyceryl distearate, alone or mixed with a wax.
- sustained release material such as glyceryl monostearate or glyceryl distearate
- the pharmaceutical compositions formed by combining the compound of the invention and a pharmaceutically acceptable carrier are then readily administered in a variety of dosage forms suitable for the disclosed routes of administration.
- the compositions may conveniently be presented in unit dosage form by methods known in the art of pharmacy.
- compositions of the invention suitable for oral administration may be presented as discrete units such as capsules or tablets, each containing a predetermined amount of the active ingredient, and optionally a suitable excipient.
- the orally available compositions may be in the form of a powder or granules, a solution or suspension in an aqueous or non-aqueous liquid, or an oil-in-water or water-in-oil liquid emulsion.
- the preparation may be tabletted, placed in a hard gelatin capsule in powder or pellet form or it may be in the form of a troche or lozenge.
- the amount of solid carrier will vary widely but will range from about 25 mg to about 1 g per dosage unit.
- the preparation may be in the form of a syrup, emulsion, soft gelatin capsule or sterile injectable liquid such as an aqueous or non-aqueous liquid suspension or solution.
- compositions of the invention may be prepared by conventional methods in the art.
- tablets may be prepared by mixing the active ingredient with ordinary adjuvants and/or diluents and subsequently compressing the mixture in a conventional tabletting machine prepare tablets.
- adjuvants or diluents comprise: corn starch, potato starch, talcum, magnesium stearate, gelatin, lactose, gums, and the like. Any other adjuvants or additives usually used for such purposes such as colorings, flavorings, preservatives etc. may be used provided that they are compatible with the active ingredients.
- the compound of the invention is a PDE10A enzyme inhibitor and as such useful to treat associated neurological and psychiatric disorders.
- the invention thus provides a compound of formula I, the compound of the invention as well as a pharmaceutical composition containing such a compound, for use in the treatment of a neurodegenerative disorder, psychiatric disorder or drug addiction in patients;
- the neurodegenerative disorder is selected from the group consisting of Alzheimer's disease, multi-infarct dementia, alcoholic dementia or other drug-related dementia, dementia associated with intracranial tumors or cerebral trauma, dementia associated with Huntington's disease or Parkinson's disease, or AIDS-related dementia; delirium; amnestic disorder; post-traumatic stress disorder; mental retardation; a learning disorder, for example reading disorder, mathematics disorder, or a disorder of written expression; attention-deficit/hyperactivity disorder; and age-related cognitive decline; and wherein the psychiatric disorder is selected from the group consisting of schizophrenia, for example of the paranoid, disorganized, catatonic, undifferentiated, or residual type; schizophreniform disorder; schizoaffective disorder, for example of the delusional type or
- the compound of the invention may be used in combination with one or more other drugs in the treatment of diseases or conditions for which the compound of the invention have utility, where the combination of the drugs together is safer or more effective than either drug alone. Additionally, the compound of the invention may be used in combination with one or more other drugs that treat, prevent, control, ameliorate, or reduce the risk of side effects or toxicity of the compound of the invention. Such other drugs may be administered, by a route and in an amount commonly used therefore, contemporaneously or sequentially with the compound of the invention. Accordingly, the pharmaceutical compositions of the invention include those that contain one or more other active ingredients, in addition to the compound of the invention. The combinations may be administered as part of a unit dosage form combination product, or as a kit or treatment protocol wherein one or more additional drugs are administered in separate dosage forms as part of a treatment regimen.
- the compound of the invention may be administered in combination with at least one neuroleptic agent (which may be a typical or an atypical antipsychotic agent) to provide improved treatment of psychiatric disorders such as schizophrenia.
- at least one neuroleptic agent which may be a typical or an atypical antipsychotic agent
- the combinations, uses and methods of treatment of the invention may also provide advantages in treatment of patients who fail to respond adequately or who are resistant to other known treatments.
- neuroleptic agent refers to drugs, which have the effect on cognition and behaviour of antipsychotic agent drugs that reduce confusion, delusions, hallucinations, and psychomotor agitation in patients with psychoses.
- neuroleptic agents include, but are not limited to: typical antipsychotic drugs, including phenothiazines, further divided into the aliphatics, piperidines, and piperazines, thioxanthenes (e.g., cisordinol), butyrophenones (e.g., haloperidol), dibenzoxazepines (e.g., loxapine), dihydroindolones (e.g., molindone), diphenylbutylpiperidines (e.g., pimozide), and atypical antipsychotic drugs, including benzisoxazoles (e.g., risperidone), sertindole, olan
- Particularly preferred neuroleptic agents for use in the invention are sertindole, olanzapine, risperidone, quetiapine, aripiprazole, haloperidol, clozapine, ziprasidone and osanetant.
- drug addiction means an abnormal desire for a drug and is generally characterized by motivational disturbances such a compulsion to take the desired drug and episodes of intense drug craving.
- Drug addiction is widely considered a pathological state.
- the disorder of addiction involves the progression of acute drug use to the development of drug-seeking behavior, the vulnerability to relapse, and the decreased, slowed ability to respond to naturally rewarding stimuli.
- DSM-IV The Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition (DSM-IV) has categorized three stages of addiction: preoccupation/anticipation, binge/intoxication, and withdrawal/negative affect. These stages are characterized, respectively, everywhere by constant cravings and preoccupation with obtaining the substance; using more of the substance than necessary to experience the intoxicating effects; and experiencing tolerance, withdrawal symptoms, and decreased motivation for normal life activities.
- disorders that can be treated according to the invention are obsessive/compulsive disorders, Tourette's syndrome and other tic disorders.
- a “neurodegenerative disorder or condition” refers to a disorder or condition that is caused by the dysfunction and/or death of neurons in the central nervous system.
- the treatment of these disorders and conditions can be facilitated by administration of an agent which prevents the dysfunction or death of neurons at risk in these disorders or conditions and/or enhances the function of damaged or healthy neurons in such a way as to compensate for the loss of function caused by the dysfunction or death of at-risk neurons.
- neurotrophic agent refers to a substance or agent that has some or all of these properties.
- neurodegenerative disorders and conditions that can be treated according to the invention include, but are not limited to, Parkinson's disease; Huntington's disease; dementia, for example Alzheimer's disease, multi-infarct dementia, AIDS-related dementia, and Fronto temperal Dementia; neurodegeneration associated with cerebral trauma; neurodegeneration associated with stroke, neurodegeneration associated with cerebral infarct; hypoglycemia-induced neurodegeneration; neurodegeneration associated with epileptic seizure; neurodegeneration associated with neurotoxin poisoning; and multi-system atrophy.
- Parkinson's disease Huntington's disease
- dementia for example Alzheimer's disease, multi-infarct dementia, AIDS-related dementia, and Fronto temperal Dementia
- neurodegeneration associated with cerebral trauma neurodegeneration associated with stroke, neurodegeneration associated with cerebral infarct
- hypoglycemia-induced neurodegeneration neurodegeneration associated with epileptic seizure
- neurodegeneration associated with neurotoxin poisoning and multi-system atrophy.
- the neurodegenerative disorder or condition involves neurodegeneration of striatal medium spiny neurons in a patient.
- the neurodegenerative disorder or condition is Huntington's disease.
- the invention provides the compound of the invention for use in a method of treating a patient to reduce body fat or body weight, or to treat non-insulin demanding diabetes mellitus (NIDDM), metabolic syndrome, or glucose intolerance.
- NIDDM non-insulin demanding diabetes mellitus
- metabolic syndrome or glucose intolerance.
- the patient is overweight or obese and the compound of the invention is administered orally.
- the method further comprising administering a second therapeutic agent to the patient, preferably an anti-obesity agent, e.g., rimonabant, orlistat, sibutramine, bromocriptine, ephedrine, leptin, pseudoephedrine, or peptide YY3-36, or analogs thereof.
- an anti-obesity agent e.g., rimonabant, orlistat, sibutramine, bromocriptine, ephedrine, leptin, pseudoephedrine, or peptide YY3-36, or analogs thereof.
- metabolic syndrome refers to a constellation of conditions that place people at high risk for coronary artery disease. These conditions include type 2 diabetes, obesity, high blood pressure, and a poor lipid profile with elevated LDL ("bad”) cholesterol, low HDL (“good”) cholesterol, and elevated triglycerides. All of these conditions are associated with high blood insulin levels.
- LDL low blood lipoprotein
- good high blood lipoprotein
- triglycerides elevated triglycerides. All of these conditions are associated with high blood insulin levels.
- the fundamental defect in the metabolic syndrome is insulin resistance in both adipose tissue and muscle.
- compounds of the present invention can be prepared by reduction of an alkene of formula V by hydrogenation using a transition metal catalyst, such as palladium metal, together with a hydrogen source, such as hydrogen gas, ammonium hydrogen carbonate, or cyclohexadiene.
- a transition metal catalyst such as palladium metal
- a hydrogen source such as hydrogen gas, ammonium hydrogen carbonate, or cyclohexadiene.
- Said alkenes of formula V can be prepared by the Wittig reaction between a phosphonium salt of formula III and an aldehyde of formula IV in a suitable solvent, such as tetrahydrofuran, in the presence of a suitable base, such as 1,8-diazabicyclo[5.4.0]undec-7-ene.
- Phosphonium salt of formula III are readily available by reaction of compounds of formula II with triphenylphosphine by methods known to chemists skilled in the art.
- Aldehydes of formula IV are readily available and known in the art as described in e.g. Journal of Medicinal Chemistry (2009), 52(21), 6535-6538 , or WO-2004024705 and US -4826833 .
- the electrophile II (scheme 2) can be prepared from the dimethylchloropyrazine of formula VI known in the art as described in e.g. Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry 1996, (19), 2345-2350 and Journal of Heterocyclic Chemistry (1981), 18(3), 555-8 .
- the compound VI can be converted to the aminopyrazine of formula VII as described in the literature e.g. Science of Synthesis (2004), 16 751-844 and Synthesis 1994, (9), 931-4 .
- O-Mesitylenesulfonylhydroxylamine is well known in the art as described in e.g. Organic Process Research & Development 2009, 13, 263-267 .
- the reaction of compound of formula VIII with methyl chloroacetate gives the electrophile II.
- a PE Sciex API 150EX instrument equipped with atmospheric pressure photo ionisation and a Shimadzu LC-8A/SLC-10A LC system was used.
- Method: Linear gradient elution with A:B 90:10 to 0:100 in 2.4 minutes and with a flow rate of 3.3 mL/min.
- Active PDE10A enzyme is prepared in a number of ways for use in PDE assays ( Loughney, K. et al. Gene 1999, 234, 109-117 ; Fujishige, K. et al. Eur J Biochem. 1999, 266, 1118-1127 and Soderling, S. et al. Proc. Natl. Acad. Sci. 1999, 96, 7071-7076 ).
- PDE10A can be expressed as full-length proteins or as truncated proteins, as long as they express the catalytic domain.
- PDE10A can be prepared in different cell types, for example insect cells or E. coli.
- catalytically active PDE10A is as follows: The catalytic domain of human PDE10A (amino acids 440-779 from the sequence with accession number NP 006652) is amplified from total human brain total RNA by standard RT-PCR and is cloned into the BamH1 and Xho1 sites of the pET28a vector (Novagen). Expression in coli is performed according to standard protocols. Briefly, the expression plasmids are transformed into the BL21 (DE3) E. coli strain, and 50 mL cultures inoculated with the cells allowed to grow to an OD600 of 0.4-0.6 before protein expression is induced with 0.5mM IPTG.
- a PDE10A assay may for example, be performed as follows: The assay is performed in 60 uL samples containing a fixed amount of the relevant PDE enzyme (sufficient to convert 20-25% of the cyclic nucleotide substrate), a buffer (50 mM HEPES7.6; 10mM MgCl 2 ; 0.02% Tween20), 0.1 mg/ml BSA, 225 pCi of 3 H-labelled cyclic nucleotide substrate, tritium labeled cAMP to a final concentration of 5 nM and varying amounts of inhibitors.
- Reactions are initiated by addition of the cyclic nucleotide substrate, and reactions are allowed to proceed for one hr at room temperature before being terminated through mixing with 15 uL 8 mg/mL yttrium silicate SPA beads (Amersham). The beads are allowed to settle for one hr in the dark before the plates are counted in a Wallac 1450 Microbeta counter. The measured signal can be converted to activity relative to an uninhibited control (100 %) and IC 50 values can be calculated using the Xlfit extension to EXCEL.
- the assay was performed in 60 uL assay buffer (50 mM HEPES pH 7.6; 10mM MgCl 2 ; 0.02% Tween20) containing enough PDE10A to convert 20-25% of 10 nM 3 H-cAMP and varying amounts of inhibitors. Following a 1 hour incubation the reactions were terminated by addition of 15 uL 8 mg/mL yttrium silicate SPA beads (Amersham). The beads were allowed to settle for one hr in the dark before the plates were counted in a Wallac 1450 Microbeta counter. IC 50 values were calculated by non linear regression using XLfit (IDBS).
- mice Male mice (NMRI, Charles River) weighing 20-25g were used. Eight mice were used in each group receiving the test compound (5 mg/kg) plus PCP (2.3 mg/kg) including the parallel control groups receiving the vehicle of the test compound plus PCP or vehicle injections only. The injection volume was 10 ml/kg. The experiment was made in normal light conditions in an undisturbed room. The test substance was injected per oss 60 min before injection of PCP, which is administered subcutaneous.
- mice Immediately after injection of PCP the mice were placed individually in special designed test cage (20 cm x 32 cm). The activity was measured by 5X8 infrared light sources and photocells spaced by 4 cm. The light beams cross the cage 1.8 cm above the bottom of the cage. Recording of a motility count requires interruption of adjacent light beams, thus avoiding counts induced by stationary movements of the mice.
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SI201030841T SI2443105T1 (sl) | 2009-06-19 | 2010-06-17 | Novi derivat finilimidazola kot inhibitor encima PDE10A |
PL10725373T PL2443105T3 (pl) | 2009-06-19 | 2010-06-17 | Nowe pochodne fenyloimidazolu jako inhibitor enzymu PDE10A |
HRP20141222AT HRP20141222T1 (hr) | 2009-06-19 | 2014-12-16 | Novi derivati fenilimidazola kao inhibitori enzima pde10a |
CY20141101071T CY1115971T1 (el) | 2009-06-19 | 2014-12-19 | Νεο παραγωγο φαινυλ ιμιδαζολιου ως αναστολεας ενζυμου pde10a |
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PCT/DK2010/050147 WO2010145668A1 (en) | 2009-06-19 | 2010-06-17 | Novel phenylimidazole derivative as pde10a enzyme inhibitor |
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US8133897B2 (en) | 2008-06-20 | 2012-03-13 | H. Lundbeck A/S | Phenylimidazole derivatives as PDE10A enzyme inhibitors |
TWI501965B (zh) | 2008-06-20 | 2015-10-01 | Lundbeck & Co As H | 作為pde10a酵素抑制劑之新穎苯基咪唑衍生物 |
TWI485151B (zh) | 2009-12-17 | 2015-05-21 | Lundbeck & Co As H | 作為pde10a酵素抑制劑之雜芳香族苯基咪唑衍生物 |
JO3089B1 (ar) * | 2010-11-19 | 2017-03-15 | H Lundbeck As | مشتقات ايميدازول كمثبطات لانزيمات pde10a |
US8552045B2 (en) | 2010-11-19 | 2013-10-08 | H. Lundbeck A/S | Tricyclic imidazole compounds as PDE10 inhibitors |
WO2012112946A1 (en) | 2011-02-18 | 2012-08-23 | Allergan, Inc. | Substituted 6,7-dialkoxy-3-isoquinolinol derivatives as inhibitors of phosphodiesterase 10 (pde10a) |
WO2013034758A1 (en) * | 2011-09-09 | 2013-03-14 | H. Lundbeck A/S | Substituted triazolopyrazines and uses thereof |
WO2013034755A1 (en) * | 2011-09-09 | 2013-03-14 | H. Lundbeck A/S | Triazolopyrazine derivatives and their use for treating neurological and psychiatric disorders |
CN103874701A (zh) * | 2011-09-09 | 2014-06-18 | H.隆德贝克有限公司 | 吡啶化合物和其用途 |
WO2013034761A1 (en) * | 2011-09-09 | 2013-03-14 | H. Lundbeck A/S | Pyridine compounds and uses thereof |
AR089361A1 (es) | 2011-12-21 | 2014-08-20 | Lundbeck & Co As H | Derivados de quinolina como inhibidores de la enzima pde10a |
WO2013107856A1 (en) * | 2012-01-20 | 2013-07-25 | H. Lundbeck A/S | Imidazole derivatives as pde10a enzyme inhibitors |
WO2013127817A1 (en) | 2012-02-27 | 2013-09-06 | H. Lundbeck A/S | Imidazole derivatives as pde10a enzyme inhibitors |
WO2014071044A1 (en) | 2012-11-01 | 2014-05-08 | Allergan, Inc. | Substituted 6,7-dialkoxy-3-isoquinoline derivatives as inhibitors of phosphodiesterase 10 (pde10a) |
US9200016B2 (en) | 2013-12-05 | 2015-12-01 | Allergan, Inc. | Substituted 6, 7-dialkoxy-3-isoquinoline derivatives as inhibitors of phosphodiesterase 10 (PDE 10A) |
WO2020094592A1 (en) * | 2018-11-06 | 2020-05-14 | H. Lundbeck A/S | Compounds for treating negative symptoms and cognitive impairments |
US20200140446A1 (en) * | 2018-11-06 | 2020-05-07 | H. Lundbeck A/S | 5,8-dimethyl-2-[2-(1-methyl-4-phenyl-1h-imidazol-2-yl)-ethyl]-[1,2,4]triazolo[1,5-a]pyrazine hemiadipate |
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US4826833A (en) | 1984-01-30 | 1989-05-02 | Pfizer Inc. | 6-(Substituted)methylene-penicillanic and 6-(substituted)hydroxymethylpenicillanic acids and derivatives thereof |
IL149106A0 (en) | 2001-04-20 | 2002-11-10 | Pfizer Prod Inc | Therapeutic use of selective pde10 inhibitors |
US20030032579A1 (en) | 2001-04-20 | 2003-02-13 | Pfizer Inc. | Therapeutic use of selective PDE10 inhibitors |
FR2824065A1 (fr) | 2001-04-26 | 2002-10-31 | Neuro3D | Composes inhibiteurs des phosphodiesterases des nucleotides cycliques, preparation et utilisations |
WO2004024705A1 (ja) | 2002-09-10 | 2004-03-25 | Takeda Pharmaceutical Company Limited | 5員複素環化合物 |
CA2503716A1 (fr) | 2002-10-30 | 2004-05-21 | Jean-Jacques Bourguignon | Utilisation d'inhibiteurs des phosphodiesterases des nucleotides cycliques, ayant une structure benzodiazepinique en therapie |
WO2005003129A1 (en) | 2003-06-30 | 2005-01-13 | Altana Pharma Ag | Pyrrolodihydroisoquinolines as pde10 inhibitors |
WO2005002579A1 (en) | 2003-06-30 | 2005-01-13 | Altana Pharma Ag | Pyrrolo-dihydroisoquinoline derivatives as pde10 inhibitors |
EP1651251A4 (en) | 2003-07-31 | 2008-06-18 | Bayer Pharmaceuticals Corp | METHOD FOR THE TREATMENT OF DIABETES AND RELATED DISEASES USING PDE 10A INHIBITORS |
WO2005082883A2 (en) | 2004-02-18 | 2005-09-09 | Pfizer Products Inc. | Tetrahydroisoquinolinyl derivatives of quinazoline and isoquinoline |
FR2870539B1 (fr) | 2004-05-19 | 2006-08-04 | Greenpharma Sa Sa | Nouvelles methodes et medicaments |
US20090162286A1 (en) | 2004-06-07 | 2009-06-25 | Pfizer Inc. | Phosphodiesterase 10 Inhibition as Treatment for Obesity-Related and Metabolic Syndrome-Related Conditions |
US20060019975A1 (en) | 2004-07-23 | 2006-01-26 | Pfizer Inc | Novel piperidyl derivatives of quinazoline and isoquinoline |
CA2578996A1 (en) | 2004-09-03 | 2006-03-16 | Memory Pharmaceuticals Corporation | 4-substituted 4, 6-dialkoxy-cinnoline derivatives as phospodiesterase 10 inhibitors for the treatment of psychiatric or neurological syndroms |
US20060183763A1 (en) * | 2004-12-31 | 2006-08-17 | Pfizer Inc | Novel pyrrolidyl derivatives of heteroaromatic compounds |
AU2007217750A1 (en) * | 2006-02-21 | 2007-08-30 | Amgen Inc. | Cinnoline derivatives as phosphodiesterase 10 inhibitors |
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